Pickling apparatus



(No Model.)

G. G. MMURTRY. PIGKLING APPARATUS.

` Patented Jan. 19, 1897.

u. WASHwuToN o c UNITED STATES PATENT OFFICE.

GEORGE G. IVICMURTRY, OF ALLEGHENY, PENNSYLVANIA.

P'ICKLING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 575,404, dated J'anuary 19, 1897.

Serial No. 601,313. (No model.)

To @ZZ whom t '1n/.Coy concern,.-

Be it known that I, GEORGE G. MCMUETRY, a citizen of the United States,residing at Allegheny, in the county of Allegheny and State ofPennsylvania, have invented or discovered certain new and usefulImprovements in Pickling Apparatus, of which improvements the followingis a specication.

The invention described herein relates to certain improvements inapparatus for pickling and cleaning metal sheets,rand has for its objecta construction whereby a more rapid and violent movement of the liquidalong the surfaces of the sheet can be effected, the movement of suchliquid being in such direction as to cause the opening up of the sheets,so as to render all parts of the surface accessible to the liquid. l

In general terms the invention consists in the construction andcombination substantially as hereinafter more fully described andclaimed.

In the accompanying drawings, forming a part of this speciiication,Figure l is a top plan view of my improved apparatus. Fig. 2 is asectional elevation of the same, and Fig. 3 is a view similar to Fig. lof a modification of the apparatus.

In the practice of my invention I employ a vat l, of any suitabledimensions, having arranged therein a frame 2, provided with a series ofuprights 3 for supporting the sheets to be cleaned in a verticalposition. Through the ends of the vat or tank l are inserted the ends ofpipes Lt and` 5, whose opposite ends` are connected to a pump 6,' of anysuitable construction, whereby a rapid movement of the liquid can beeffected. This pump G is also connected by a pipe 7 to the vat or tankl, the pipe preferably entering the tank through the bottom and at aboutthe middle thereof. In the pipes 4 and 5 are arranged valves S and 9 forthe purpose of controlling the flow of liquid from the pumps throughthese pipes.

In operating my improved apparatus the sheets are arranged between thepins 3 in such manner that their edges will be toward the discharge endsof the pipes l and 5. The pump is now operated and the liquid is drawnfrom the tank through the pipe 7 and discharged into the tank Vagainwith considerable force through the pipe 4, the valve 9 in the pipe 5being closed. As the stream of liquid from the pipe 4 strikes the edgesof the sheets they will be separated to a slight extent, so as to permitthe liquid to liow over the inner surfaces. After the liquid has beenforced `through the pipe 4 for a considerable time the valve 9 is openedand the valve 8 closed, thereby reversing the movement of the stream ofliquid through the bath. The stream entering through the pipe 5 willopen or support the ends of the sheets adjacent to such pipe, therebyallowing the circulation of the water over the inner surfaces of suchsheets.

In lieu of the construction shown by Figs. l and 2 the arrangement shownin Fig. 3l may be employed. In this arrangement I employ two pumps 6 and6b, arranged, respectively, adjacent to opposite ends of the vat ortank. Each of these pumps is provided with a pipe 7, entering the tankat the end opposite to that at which the pump is located, through whichliquid is drawn from a tank, andlalso with a pipe l0, entering the tankat the same end at which the pump is located, for discharging the waterinto the tank. In operating this form of apparatus one of the pumps isoperated for a considerable .length of time, the liquid being drawn fromone end. of the tank and discharged into the opposite end thereof,thereby producing a complete movement of the liquid from one end ofthe-tank between the sheets to the opposite end thereof. By stopping oneof the pumps and starting the pump at the opposite end a reversecirculation of the liquid is effect-ed.

It will be readily understood by those skilled in the art that the endto and circulation effected by the apparatus, as shown in Fig. 3,

may also be effected by the 'employment of one pump which has two pipesconnected to opposite ends, respectively, of the tank or vat, saidpump-supply pipes being provided with valves whereby they may be closedat will.

I claim herein as my invention- 1. In a sheet-pickling apparatus, thecombination of a tank or vat, a pump having supply and discharge pipesso connected to the tank or vat as to produce a movement of liq- IOO uidtherethrough and means for supporting the sheets in a vertical positionparallel to the line of movement of the liquid through the tank,substantially as set forth.

2. In a sheet-piokling apparatus, the oombination of a tank having tWosupply-pipes Connected With opposite ends of the tanks, a discharge-pipeconnected to the tank, a pump connected to the supply and dischargepipes,

1o Valves arranged in the supply-pipes and means for supporting thesheets in the tank in a vertical position parallel with the line of ilowof the liquid through the tank, substantially as set forth.

In testimony whereof I have hereunto set I5 my hand.

GEORGE G. MCMURTRY. Witnesses:

WM. D. HALL, JN0. Q. COCHRANE.

